Which of the following is a correct balanced chemical equation?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 2C₄H₁₀(l) + 13O₂(g) → 8CO₂(g) + 10H₂O
General reaction:
2C₄H₁₀(l) + 13O₂(g) → 8CO₂(g) + 10H₂O
Step 1: Balance Carbon
Butane has 4 carbons → produces 4 CO₂ per 1 C₄H₁₀.
So, for 2 molecules of C₄H₁₀ → 8 CO₂.
Step 2: Balance Hydrogen
Butane has 10 hydrogens → produces 5 H₂O per 1 C₄H₁₀.
So, for 2 molecules of C₄H₁₀ → 10 H₂O.
Step 3: Balance Oxygen
Products need:
-
8 CO₂ → 16 O atoms
-
10 H₂O → 10 O atoms
Total = 26 O atoms → need 13 O₂ molecules.
Final Balanced Equation:
2C4H10(l)+13O2(g)→8CO2(g)+10H2O(g)